notification.php

讲的是网络编程

<?php
// $Id: notification.php 1102 2007-10-19 02:55:52Z dugris $
//  ------------------------------------------------------------------------ //
//                XOOPS - PHP Content Management System                      //
//                    Copyright (c) 2000 XOOPS.org                           //
//                       <http://www.xoops.org/>                             //
//  ------------------------------------------------------------------------ //
//  This program is free software; you can redistribute it and/or modify     //
//  it under the terms of the GNU General Public License as published by     //
//  the Free Software Foundation; either version 2 of the License, or        //
//  (at your option) any later version.                                      //
//                                                                           //
//  You may not change or alter any portion of this comment or credits       //
//  of supporting developers from this source code or any supporting         //
//  source code which is considered copyrighted (c) material of the          //
//  original comment or credit authors.                                      //
//                                                                           //
//  This program is distributed in the hope that it will be useful,          //
//  but WITHOUT ANY WARRANTY; without even the implied warranty of           //
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the            //
//  GNU General Public License for more details.                             //
//                                                                           //
//  You should have received a copy of the GNU General Public License        //
//  along with this program; if not, write to the Free Software              //
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA //
//  ------------------------------------------------------------------------ //
// Author: Kazumi Ono (AKA onokazu)                                          //
// URL: http://www.xoops.org/ http://jp.xoops.org/  http://www.myweb.ne.jp/  //
// Project: The XOOPS Project (http://www.xoops.org/)                        //
// ------------------------------------------------------------------------- //

if (!defined('XOOPS_ROOT_PATH')) {
	exit();
}
// RMV-NOTIFY
include_once XOOPS_ROOT_PATH . '/include/notification_constants.php';
include_once XOOPS_ROOT_PATH . '/include/notification_functions.php';

/**
 *
 *
 * @package     kernel
 * @subpackage  notification
 *
 * @author	    Michael van Dam	<[e-mail]>
 * @copyright	copyright (c) 2000-2003 XOOPS.org
 */

/**
 * A Notification
 *
 * @package     kernel
 * @subpackage  notification
 *
 * @author	    Michael van Dam	<[e-mail]>
 * @copyright	copyright (c) 2000-2003 XOOPS.org
 */
class XoopsNotification extends XoopsObject
{

    /**
     * Constructor
     **/
    function XoopsNotification()
    {
        $this->XoopsObject();
		$this->initVar('not_id', XOBJ_DTYPE_INT, NULL, false);
		$this->initVar('not_modid', XOBJ_DTYPE_INT, NULL, false);
		$this->initVar('not_category', XOBJ_DTYPE_TXTBOX, null, false, 30);
		$this->initVar('not_itemid', XOBJ_DTYPE_INT, 0, false);
		$this->initVar('not_event', XOBJ_DTYPE_TXTBOX, null, false, 30);
		$this->initVar('not_uid', XOBJ_DTYPE_INT, 0, true);
		$this->initVar('not_mode', XOBJ_DTYPE_INT, 0, false);
    }

// FIXME:???
// To send email to multiple users simultaneously, we would need to move
// the notify functionality to the handler class.  BUT, some of the tags
// are user-dependent, so every email msg will be unique.  (Unless maybe use
// smarty for email templates in the future.)  Also we would have to keep
// track if each user wanted email or PM.

	/**
	 * Send a notification message to the user
	 *
	 * @param  string  $template_dir  Template directory
	 * @param  string  $template      Template name
     * @param  string  $subject       Subject line for notification message
     * @param  array   $tags Array of substitutions for template variables
	 *
	 * @return  bool	true if success, false if error
	 **/
	function notifyUser($template_dir, $template, $subject, $tags)
	{
		// Check the user's notification preference.

		$member_handler =& xoops_gethandler('member');
		$user =& $member_handler->getUser($this->getVar('not_uid'));
		if (!is_object($user)) {
			return true;
		}
		$method = $user->getVar('notify_method');

		$xoopsMailer =& getMailer();
		include_once XOOPS_ROOT_PATH . '/include/notification_constants.php';
		switch($method) {
		case XOOPS_NOTIFICATION_METHOD_PM:
			$xoopsMailer->usePM();
			$config_handler =& xoops_gethandler('config');
			$xoopsMailerConfig =& $config_handler->getConfigsByCat(XOOPS_CONF_MAILER);
			$xoopsMailer->setFromUser($member_handler->getUser($xoopsMailerConfig['fromuid']));
			foreach ($tags as $k=>$v) {
				$xoopsMailer->assign($k, $v);
			}
			break;
		case XOOPS_NOTIFICATION_METHOD_EMAIL:
			$xoopsMailer->useMail();
			foreach ($tags as $k=>$v) {
				$xoopsMailer->assign($k, preg_replace("/&amp;/i", '&', $v));
			}
			break;
		default:
			return true; // report error in user's profile??
			break;
		}

		// Set up the mailer
		$xoopsMailer->setTemplateDir($template_dir);
		$xoopsMailer->setTemplate($template);
		$xoopsMailer->setToUsers($user);
		//global $xoopsConfig;
		//$xoopsMailer->setFromEmail($xoopsConfig['adminmail']);
		//$xoopsMailer->setFromName($xoopsConfig['sitename']);
		$xoopsMailer->setSubject($subject);
		$success = $xoopsMailer->send();

		// If send-once-then-delete, delete notification
		// If send-once-then-wait, disable notification

		include_once XOOPS_ROOT_PATH . '/include/notification_constants.php';
		$notification_handler =& xoops_gethandler('notification');

		if ($this->getVar('not_mode') == XOOPS_NOTIFICATION_MODE_SENDONCETHENDELETE) {
			$notification_handler->delete($this);
			return $success;
		}

		if ($this->getVar('not_mode') == XOOPS_NOTIFICATION_MODE_SENDONCETHENWAIT) {
			$this->setVar('not_mode', XOOPS_NOTIFICATION_MODE_WAITFORLOGIN);
			$notification_handler->insert($this);
		}
		return $success;

	}

}

/**
 * XOOPS notification handler class.
 *
 * This class is responsible for providing data access mechanisms to the data source
 * of XOOPS notification class objects.
 *
 *
 * @package     kernel
 * @subpackage  notification
 *
 * @author	    Michael van Dam <[e-mail]>
 * @copyright	copyright (c) 2000-2003 XOOPS.org
 */
class XoopsNotificationHandler extends XoopsObjectHandler
{

    /**
     * Create a {@link XoopsNotification}
     *
     * @param	bool    $isNew  Flag the object as "new"?
     *
     * @return	object
     */
    function &create($isNew = true)
    {
        $notification = new XoopsNotification();
        if ($isNew) {
            $notification->setNew();
        }
        return $notification;
    }


    /**
     * Retrieve a {@link XoopsNotification}
     *
     * @param   int $id ID
     *
     * @return  object  {@link XoopsNotification}, FALSE on fail
     **/
    function &get($id)
    {
        $notification = false;
    	$id = intval($id);
        if ($id > 0) {
            $sql = 'SELECT * FROM '.$this->db->prefix('xoopsnotifications').' WHERE not_id='.$id;
            if (!$result = $this->db->query($sql)) {
                return $notification;
            }
            $numrows = $this->db->getRowsNum($result);
            if ($numrows == 1) {
                $notification = new XoopsNotification();
                $notification->assignVars($this->db->fetchArray($result));
            }
        }
        return $notification;
    }


    /**
     * Write a notification(subscription) to database
     *
     * @param   object  &$notification
     *
     * @return  bool
     **/
    function insert(&$notification)
    {
        /**
        * @TODO: Change to if (!(class_exists($this->className) && $obj instanceof $this->className)) when going fully PHP5
        */
        if (!is_a($notification, 'xoopsnotification')) {
            return false;
        }
        if (!$notification->isDirty()) {
            return true;
        }
        if (!$notification->cleanVars()) {
            return false;
        }
        foreach ($notification->cleanVars as $k => $v) {
            ${$k} = $v;
        }
        if ($notification->isNew()) {
            $not_id = $this->db->genId('xoopsnotifications_not_id_seq');
	    $sql = sprintf("INSERT INTO %s (not_id, not_modid, not_itemid, not_category, not_uid, not_event, not_mode) VALUES (%u, %u, %u, %s, %u, %s, %u)", $this->db->prefix('xoopsnotifications'), $not_id, $not_modid, $not_itemid, $this->db->quoteString($not_category), $not_uid, $this->db->quoteString($not_event), $not_mode);
        } else {
	    $sql = sprintf("UPDATE %s SET not_modid = %u, not_itemid = %u, not_category = %s, not_uid = %u, not_event = %s, not_mode = %u WHERE not_id = %u", $this->db->prefix('xoopsnotifications'), $not_modid, $not_itemid, $this->db->quoteString($not_category), $not_uid, $this->db->quoteString($not_event), $not_mode, $not_id);
        }
        if (!$result = $this->db->query($sql)) {
            return false;
        }
        if (empty($not_id)) {
            $not_id = $this->db->getInsertId();
        }
        $notification->assignVar('not_id', $not_id);
        return true;
    }

    /**
     * Delete a {@link XoopsNotification} from the database
     *
     * @param   object  &$notification
     *
     * @return  bool
     **/
    function delete(&$notification)
    {
        /**
        * @TODO: Change to if (!(class_exists($this->className) && $obj instanceof $this->className)) when going fully PHP5
        */
        if (!is_a($notification, 'xoopsnotification')) {
            return false;
        }

        $sql = sprintf("DELETE FROM %s WHERE not_id = %u", $this->db->prefix('xoopsnotifications'), $notification->getVar('not_id'));
        if (!$result = $this->db->query($sql)) {
            return false;
        }
        return true;
    }

    /**
     * Get some {@link XoopsNotification}s
     *
     * @param   object  $criteria
     * @param   bool    $id_as_key  Use IDs as keys into the array?
     *
     * @return  array   Array of {@link XoopsNotification} objects
     **/
    function getObjects($criteria = null, $id_as_key = false)
    {
        $ret = array();
        $limit = $start = 0;
        $sql = 'SELECT * FROM '.$this->db->prefix('xoopsnotifications');
        if (isset($criteria) && is_subclass_of($criteria, 'criteriaelement')) {
            $sql .= ' '.$criteria->renderWhere();
            $sort = ($criteria->getSort() != '') ? $criteria->getSort() : 'not_id';
            $sql .= ' ORDER BY '.$sort.' '.$criteria->getOrder();
            $limit = $criteria->getLimit();
            $start = $criteria->getStart();
        }
        $result = $this->db->query($sql, $limit, $start);
        if (!$result) {
            return $ret;
        }
        while ($myrow = $this->db->fetchArray($result)) {
            $notification = new XoopsNotification();
            $notification->assignVars($myrow);
            if (!$id_as_key) {
                $ret[] =& $notification;
            } else {
                $ret[$myrow['not_id']] =& $notification;
            }
            unset($notification);
        }
        return $ret;
    }

// TODO: Need this??
    /**
     * Count Notifications
     *
     * @param   object  $criteria   {@link CriteriaElement}
     *
     * @return  int     Count
     **/
    function getCount($criteria = null)
    {
        $sql = 'SELECT COUNT(*) FROM '.$this->db->prefix('xoopsnotifications');
        if (isset($criteria) && is_subclass_of($criteria, 'criteriaelement')) {
            $sql .= ' '.$criteria->renderWhere();
        }
        if (!$result =& $this->db->query($sql)) {
            return 0;
        }
        list($count) = $this->db->fetchRow($result);
        return $count;
    }

    /**
     * Delete multiple notifications
     *
     * @param   object  $criteria   {@link CriteriaElement}
     *
     * @return  bool
     **/
    function deleteAll($criteria = null)
    {
        $sql = 'DELETE FROM '.$this->db->prefix('xoopsnotifications');
        if (isset($criteria) && is_subclass_of($criteria, 'criteriaelement')) {
            $sql .= ' '.$criteria->renderWhere();
        }
        if (!$result = $this->db->query($sql)) {
            return false;
        }
        return true;
    }

// Need this??
    /**
     * Change a value in multiple notifications
     *
     * @param   string  $fieldname  Name of the field
     * @param   string  $fieldvalue Value to write
     * @param   object  $criteria   {@link CriteriaElement}
     *
     * @return  bool
     **/
/*
    function updateAll($fieldname, $fieldvalue, $criteria = null)
    {
        $set_clause = is_numeric($fieldvalue) ? $filedname.' = '.$fieldvalue : $filedname." = '".$fieldvalue."'";
        $sql = 'UPDATE '.$this->db->prefix('xoopsnotifications').' SET '.$set_clause;
        if (isset($criteria) && is_subclass_of($criteria, 'criteriaelement')) {
            $sql .= ' '.$criteria->renderWhere();
        }
        if (!$result = $this->db->query($sql)) {
            return false;
        }
        return true;
    }
*/

	// TODO: rename this...
	// Also, should we have get by module, get by category, etc...??

	function &getNotification ($module_id, $category, $item_id, $event, $user_id)
	{
		$criteria = new CriteriaCompo();
		$criteria->add(new Criteria('not_modid', intval($module_id)));
		$criteria->add(new Criteria('not_category', $category));
		$criteria->add(new Criteria('not_itemid', intval($item_id)));
		$criteria->add(new Criteria('not_event', $event));
		$criteria->add(new Criteria('not_uid', intval($user_id)));
		$objects = $this->getObjects($criteria);
		if (count($objects) == 1) {
			return $objects[0];
		}
		$inst = false;
		return $inst;
	}

	/**
	 * Determine if a user is subscribed to a particular event in
	 * a particular module.
	 *
	 * @param  string  $category  Category of notification event
	 * @param  int     $item_id   Item ID of notification event
	 * @param  string  $event     Event
     * @param  int     $module_id ID of module (default current module)
	 * @param  int     $user_id   ID of user (default current user)
	 * return int  0 if not subscribe; non-zero if subscribed
	 */